XPS studies of Cu/ZnO/Al2O3 ultra-fine catalysts derived by a novel gel oxalate co-precipitation for methanol synthesis by CO2+H2

被引：164

作者：

Dai, WL

Sun, Q

Deng, JF ^{[1
]}

Wu, D

Sun, YH

机构：

[1] Fudan Univ, Dept Chem, Shanghai 200433, Peoples R China

[2] State Key Lab Coal Convers, Taiyuan 030001, Shanxi, Peoples R China

来源：

APPLIED SURFACE SCIENCE | 2001年 / 177卷 / 03期

关键词：

X-ray photoelectron spectroscopy; Cu/ZnO/Al2O3; methanol synthesis; synergism; active site;

D O I：

10.1016/S0169-4332(01)00229-X

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The chemical states of Cu and Zn in an ultra-fine high performance Cu/ZnO/Al2O3 catalyst at various preparation stages for the methanol synthesis by CO2/H-2 were investigated by X-ray photoelectron spectroscopy. It was found that copper was presented as metallic state and zinc still as ZnO during reaction or reduction. Moreover, it shows that the metallic Cu can be partially oxidized to Cu6+ species by pure CO2. The active center of the Cu/ZnO/Al2O3 catalyst for methanol synthesis was discussed. (C) 2001 Elsevier Science B.V. All rights reserved.

引用

页码：172 / 179

页数：8

共 40 条

[11]

CHINCHEN GC, 1984, AM CHEM SOC DIV FUEL, V19, P178

[12]

Deng JF, 1996, APPL CATAL A-GEN, V139, P75

[13] STUDIES ON THE CHEMICAL-STATE OF CU DURING METHANOL SYNTHESIS [J].